> Martin Sperl <kernel@xxxxxxxxxxxxxxxx> hat am 17. Februar 2016 um 19:25 > geschrieben: > > As I am trying to complete the list of clocks here my “best” summary > so far of the clock tree for the bcm2835 taken from various sources: > * Datasheet > * broadcom provided VC4 headers (via https://github.com/msperl/rpi-registers) > * mailing list > > And I have come up with the following description that > you can put in graphviz or http://www.webgraphviz.com/ > > --- cut here --- > digraph clocks { > graph [ordering="out"]; > > subgraph cluster_osc { > label = "Oscillators"; > > "GND"; > "OSC"; > "testdebug0"; > "testdebug1"; > } > > subgraph cluster_pll { > label = "PLLs"; > > subgraph cluster_plla { > label = "PLLA"; > > OSC -> PLLA; > > PLLA -> PLLA_core; > PLLA -> PLLA_per; > PLLA -> PLLA_dsi0; > PLLA -> PLLA_ccp2; > } > > subgraph cluster_pllb { > label = "PLLB"; > > OSC -> PLLB; > > PLLB -> PLLB_ARM; > PLLB -> PLLB_SP0; > PLLB -> PLLB_SP1; > PLLB -> PLLB_SP2; > } > > subgraph cluster_pllc { > label = "PLLC"; > > OSC -> PLLC; > > PLLC -> PLLC_core0; > PLLC -> PLLC_core1; > PLLC -> PLLC_core2; > PLLC -> PLLC_per; > } > > subgraph cluster_plld { > label = "PLLD"; > > OSC -> PLLD; > > PLLD -> PLLD_core; > PLLD -> PLLD_per; > PLLD -> PLLD_dsi0; > PLLD -> PLLD_dsi1; > } > > subgraph cluster_pllh { > label = "PLLH"; > > OSC -> PLLH; > > PLLH -> PLLH_aux; > PLLH -> PLLH_pix; > PLLH -> PLLH_rcal; > } > } > > subgraph cluster_mux { > label = "clocks"; > > subgraph cluster_vpu_clocks { > label = "VPU-clocks"; > > subgraph cluster_vpu_mux { > label = "VPU-mux"; > > vGND [label="0: GND"]; > vOSC [label="1: OSC"]; > vtestdebug0 [label="2: testdebug0"]; > vtestdebug1 [label="3: testdebug1"]; > vPLLA_core [label="4: PLLA_core"]; > vPLLC_core0 [label="5: PLLC_core0"]; > vPLLD_core [label="6: PLLD_core"]; > vPLLH_aux [label="7: PLLH_aux"]; > vPLLC_core1 [label="8: PLLC_core1"]; > vPLLC_core2 [label="9: PLLC_core2"]; > > GND -> vGND -> vpu_mux; > OSC -> vOSC -> vpu_mux; > testdebug0 -> vtestdebug0 -> vpu_mux; > testdebug1 -> vtestdebug1 -> vpu_mux; > PLLA_core -> vPLLA_core -> vpu_mux; > PLLC_core0 -> vPLLC_core1 -> vpu_mux; > PLLD_core -> vPLLD_core -> vpu_mux; > PLLH_aux -> vPLLH_aux -> vpu_mux; > PLLC_core1 -> vPLLC_core1 -> vpu_mux; > PLLC_core2 -> vPLLC_core2 -> vpu_mux; > } > > vpu_mux -> vpu; > vpu_mux -> v3d; > vpu_mux -> isp; > vpu_mux -> h264; > vpu_mux -> sdram; > } > > subgraph cluster_per_clocks { > label = "Periperial-clocks"; > > subgraph cluster_per_mux { > label = "Periperal-mux"; > > pGND [label="0: GND"]; > pOSC [label="1: OSC"]; > ptestdebug0 [label="2: testdebug0"]; > ptestdebug1 [label="3: testdebug1"]; > pPLLA_per [label="4: PLLA_per"]; > pPLLC_per [label="5: PLLC_per"]; > pPLLD_per [label="5: PLLD_per"]; > pPLLH_aux [label="5: PLLH_aux"]; > > GND -> pGND -> per_mux; > OSC -> pOSC -> per_mux; > testdebug0 -> ptestdebug0 -> per_mux; > testdebug1 -> ptestdebug1 -> per_mux; > PLLA_per -> pPLLA_per -> per_mux; > PLLC_per -> pPLLC_per -> per_mux; > PLLD_per -> pPLLD_per -> per_mux; > PLLH_aux -> pPLLH_aux -> per_mux; > } > > per_mux -> vec; > per_mux -> uart; > per_mux -> hsm; > per_mux -> emmc; > per_mux -> pwm; > per_mux -> pcm; > per_mux -> aveo; > per_mux -> cam0; > per_mux -> cam1; > per_mux -> dft; > per_mux -> dpi; > per_mux -> dsi0e; > per_mux -> dsi1e; > per_mux -> gp0; > per_mux -> gp1; > per_mux -> gp2; > per_mux -> slim; > per_mux -> smi; > } > > subgraph cluster_osc_clocks { > label = "osc-clocks"; > > subgraph cluster_osc_mux { > label = "osc-mux"; > > oGND [label="0: GND"]; > oOSC [label="1: OSC"]; > otestdebug0 [label="2: testdebug0"]; > otestdebug1 [label="3: testdebug1"]; > > GND -> oGND -> osc_mux; > OSC -> oOSC -> osc_mux; > testdebug0 -> otestdebug0 -> osc_mux; > testdebug1 -> otestdebug1 -> osc_mux; > } > > osc_mux -> tsens; > osc_mux -> tec; > osc_mux -> otp; > } > > subgraph cluster_unknown_mux_clocks { > label = "unknown-parent-mux-clocks"; > > ukn_mux -> ccp2; > ukn_mux -> dsi0pix; > ukn_mux -> dsi1pix; > ukn_mux -> pulse; > ukn_mux -> td0; > ukn_mux -> td1; > } > > subgraph cluster_debug_clocks { > label = "debug-clocks"; > > debug_mux -> peria; > debug_mux -> sys; > } > } > > subgraph cluster_aux { > label = “auxiliar-clocks"; > > vpu -> spi1; > vpu -> spi2; > vpu -> uart1; > } > } > --- cut here --- > > I have no idea where we could put this information > in the kernel tree - maybe this would help. > Documentation/devicetree/bindings/clock/brcm,bcm2835-cprman.txt should be a good place. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
